Where: Tehama County, California (40.0° N, 122.6° W: paleocoordinates 36.2° N, 69.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Buchia aff. B. okensis other zone, Late/Upper Tithonian (150.8 - 145.0 Ma)

• Late Tithonian. From upper few hundred feet of Jurassic sequence.

• bed-level stratigraphic resolution

Environment/lithology: marine; massive sandstone

Size class: macrofossils

Collected by Gerald C. Young in 1957; reposited in the UCMP

Primary reference: R. W. Imlay and D. L. Jones. 1970. Ammonites from the Buchia zones in northwestern California and southwestern Oregon. United States Geological Survey Professional Paper 647-B:B1-B59 [J. Marcot/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 225861: authorized by Jonathan Marcot, entered by Jonathan Marcot on 06.06.2022

Creative Commons license: CC BY (attribution)